@plastic orange
Thanks for the pics its much appreciated that you took the time to do that for me thanks. They look similar blades to the ones I have on so I will double check that in a minute.
@mudguts
I too tend to buy German stuff for quality reasons (My Lexi being the exception), The screen wash I currently use is the concentrated stuff from Lidl as it was the ONLY stuff I tried that wouldn't freeze in the poorly designed wiper system on a Merc Sprinter I was driving in the cold conditions a couple of years ago. In fact Lidl's are hard to beat quality wise on an awful lot of their German products and the prices help too. I can absolutely recommend the Welsh butter as a treat, Not German I know but well sourced Lidl's well done.
With the regard to the Bar Keepers friend, purchased some earlier and have cleaned the windscreen and so far, no juddering but lets see how I get on tonight in the rain. Had a bit left over so tried it on an old pan, damn that stuff cleans well ! Thanks for all the tips guys, very very helpful.
If anyone has been following my experiment with the BG44K fuel additive, I can confirm that it feels like the engine is smoother and more responsive and the tickover which I didnt think was lumpy before seems rock steady now and I've not experienced that stalling problem when coming off a motorway run since but that might be luck as I cant see how it could clean the throttle body, or does it? Anyway I have purchased a gasket for the throttle body so will strip her down and have a look when the weather allows.